short.MaxValue:32767 short.MinValue:-32768 int.MaxValue:2147483647 int.MinValue:-2147483648 long.MaxValue:9223372036854775807 long.MinValue:-9223372036854775808 float.Epsilon:1.401298E-45 float.MaxValue:3.402823E+38 float.MinValue:-3.402823E+38 float.NaN:非数字 float.NegativeInfinity:负无穷大 float.PositiveInfinity:正无穷大 double.Epsilon:4.94065645841247E-324 double.MaxValue:1.79769313486232E+308 double.MinValue:-1.79769313486232E+308 double.NaN:非数字 double.NegativeInfinity:负无穷大 double.PositiveInfinity:正无穷大 string.Empty:"" bool.FalseString:False bool.TrueString:True char.MaxValue:'' char.MinValue:'' byte.MaxValue:255 byte.MinValue:0 ushort.MaxValue:65535 ushort.MinValue:0 uint.MaxValue:4294967295 uint.MinValue:0 ulong.MaxValue:18446744073709551615 ulong.MinValue:0